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Polyaxial cannulated screw

a cannula and polyaxial technology, applied in the field of cannulas, can solve the problems of reduced disc ability, limited mobility, severe pain,

Active Publication Date: 2018-08-09
ATLAS SPINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The polyaxial cannulated screw is a small and flexible implant that can be used to support loads in spinal surgery procedures. It can be used in different locations in the spine and can help improve outcomes for patients. The screw is easy to insert through small incisions and can provide an immediate benefit to surgeons who use rods between facets.

Problems solved by technology

Deterioration of an intervertebral disc results in limited mobility and can cause severe pain.
Further, a reduction in volume of the nucleus pulposus reduces the disc's ability to absorb shock which can result in disc herniation.
The bulge of a herniated disc may also put pressure on nearby nerve structures resulting in pain as well as diminished range of motion.
However, these surgical options are highly invasive and require prolonged hospitalization and recovery.

Method used

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Examples

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Embodiment Construction

[0017]The medical device enables surgical access to the weight-bearing portion of the spine percutaneously through the pedicle. The medical device described herein comprises a cannulated screw that includes an inflatable expandable body to mimic the properties of the natural disc by maintaining the intervertebral disc space through a full range of natural motion and absorb the shocks of daily use. An end of the screw includes a U-shaped saddle for securing a rod member. The U-shaped saddle can be fixed or polyaxially attached.

[0018]The medical device described herein provides a better overall approach to modifying the relationship between adjacent vertebral bodies, without altering the surrounding anatomy, thereby reducing the time a patient and surgeon have to spend in surgery, and reducing or altogether eliminating hospitalization following the procedure. Embodiments of the invention may be practiced without the theoretical aspects presented. Moreover, the theoretical aspects are ...

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Abstract

A polyaxial cannulated screw having a resilient expandable body capable of supporting compressive and cyclic loads. The expandable body provides an artificial disc prosthesis by use of the expandable body that mimics the properties of the natural disc by maintaining the intervertebral disc space through a full range of natural motion, absorbing shocks and permitting a natural range of motion. A U-shaped saddle attached to a spherical ball permits optimum positioning of a rod member by polyaxial placement.

Description

PRIORITY CLAIM[0001]In accordance with 37 C.F.R. 1.76, a claim of priority is included in an Application Data Sheet filed concurrently herewith. Accordingly, the present invention claims priority as a continuation-in-part to U.S. patent application Ser. No. 15 / 695,521, filed on Sep. 5, 2017, entitled “CANNULATED SCREW WITH BALLOON”, which is a continuation to U.S. patent application Ser. No. 14 / 210,262, filed on Mar. 13, 2014, entitled “TRANSPEDICULAR NUCLEUS REPLACEMENT SYSTEM”, now U.S. Pat. No. 9,763,802, issued Sep. 19, 2017, which claims priority to U.S. provisional patent application Ser. No. 61 / 784,573, filed on Mar. 14, 2013, entitled “TRANSPEDICULAR NUCLEUS REPLACEMENT SYSTEM”, the contents of which are hereby expressly incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates generally to surgically-implantable spinal devices and more specifically, to a cannulated screw with inflatable expandable body for support of a rod.BACKGROUND OF THE ...

Claims

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Application Information

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IPC IPC(8): A61F2/44
CPCA61F2/441A61F2/442A61F2/30744A61F2/4611A61F2002/3085A61F2002/30563A61F2002/30588A61F2002/444A61B17/7037A61B17/7097A61B17/864A61B17/8811A61B17/70
Inventor BAYNHAM, MATTHEW G.
Owner ATLAS SPINE